Hi
EZline tends to be favoured by those who stretch rigging from fixed point to fixed point - either a turnbuckle or an anchor point. In 1/48 most turnbuckles would be way over scale and you have to line them up so carefully, otherwise a superb model is ruined by a tensioned wire attaching to a kinked buckle. It adds no rigidity to the structure and there are worries about whether the elastic might perish over time. The kinking can be resolved by attaching buckles to rings mountings. Many modellers use this and have had no problems so far with degradation.
Mono thread can be threaded through mounting rings and back on itself to tension and superglue in a brass or poly sleeve, but a lot of modellers thread mono right through the wing and out the other side - carefully slicing off end with a razor flush to surface. This usually requires very little, if any touch-up and adds a great deal of rigidity and strength to wobbly undercarriages, struts etc - especially useful with heavy resin wings that might sag otherwise. No known problems of degradation so far.
I tend to use Maxima 2lb or 3lb Chameleon mono fishing line, although "invisible thread" in smoke from craft shops is fine too.
So, you takes your pick...
EZline maybe easier to spot attach end-to-end but more fiddly if working with turnbuckles; Mono simple to thread through wing but may require a modicum of touch-up. Turnbuckles on mono can be added by a blob of paint in 1/48.
EZline difficult to colour as it is elastic but is dark anyway, mono can be colored with a nearly-dry brush n situ, although it,s always worth slipping a piece of scrap paper over wing surface in case you spring some paint on to it.
HTH
Sandy